Mental computation strategies

What is mental computation? Mclntosh, (2005, p.5) describes computation as "an addition, subtraction, multiplication or division leading to an exact answer, or the process of achieving this". Therefore, mental computation is " a calculation performed entirely in the head, with only the answer being written" (Mclntosh 2005, 5).

Hundred chart
Bobis, Mulligan & Lowrie (2008) explain that hundred chart is a well-known representation of numbers 1-100 (or 0-99) that has a multitude of uses for developing counting, patterning, base ten, addition and subtraction, and multiplication and division fact knowledge. The use of partitioning and sequencing ('split and jump') methods can be assisted through the complementary use of the hundreds chart.

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